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Ionic Crystal Structures

Ionic Crystal Structures

Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...

Molecular and Ionic Solids

Molecular and Ionic Solids

Crystalline solids are divided into four types: molecular, ionic, metallic, and covalent network based on the type of constituent units and their interparticle interactions.
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...

Ionic Bonding and Electron Transfer

Ionic Bonding and Electron Transfer

Ions are atoms or molecules bearing an electrical charge. A cation (a positive ion) forms when a neutral atom loses one or more electrons from its valence shell, and an anion (a negative ion) forms when a neutral atom gains one or more electrons in its valence shell. Compounds composed of ions are called ionic compounds (or salts), and their constituent ions are held together by ionic bonds: electrostatic forces of attraction between oppositely charged cations and anions.

Intermolecular Forces

Intermolecular Forces

Atoms and molecules interact through bonds (or forces): intramolecular and intermolecular. The forces are electrostatic as they arise from interactions (attractive or repulsive) between charged species (permanent, partial, or temporary charges) and exist with varying strengths between ions, polar, nonpolar, and neutral molecules. The different types of intermolecular forces are ion–dipole, dipole–dipole, hydrogen bonds, and dispersion; among these, dipole–dipole, hydrogen...

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Related Experiment Video

Updated: Feb 22, 2026

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding

Published on: March 24, 2018

Correction: Self-segregated nanostructure in room temperature ionic liquids.

Diego Pontoni¹, Julia Haddad, Marco Di Michiel

¹ESRF - The European Synchrotron and Partnership for Soft Condensed Matter (PSCM), 71 Avenue des Martyrs, 38000 Grenoble, France.

|September 26, 2017

Summary

This summary is machine-generated.

This correction clarifies findings on self-segregated nanostructures in room temperature ionic liquids. It ensures accurate understanding of nanostructure formation and properties in these versatile solvents.

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Area of Science:

Materials Science
Physical Chemistry
Nanotechnology

Background:

Room temperature ionic liquids (RTILs) exhibit unique self-assembly properties.
Understanding nanostructure formation is crucial for RTIL applications.
Previous work reported self-segregated nanostructures in specific RTILs.

Purpose of the Study:

To correct and clarify the findings presented in the original publication.
To ensure accurate representation of the self-segregated nanostructure in RTILs.
To provide a precise account of the experimental observations.

Main Methods:

Re-analysis of experimental data.
Refinement of structural models.
Correction of reported parameters.

Main Results:

Clarification of the precise dimensions and distribution of nanostructures.
Correction of thermodynamic parameters related to self-segregation.
Improved understanding of the driving forces behind nanostructure formation.

Conclusions:

The corrected findings provide a more accurate basis for understanding RTIL behavior.
Accurate nanostructure characterization is essential for designing RTIL-based materials.
This correction ensures the integrity of scientific data in the field of ionic liquids.